StoichiometryMolar Mass1166Choose the best answerOne gram-mole of which pair has equal mass?ANO₂ and CO₂BNa and NH₃CCH₄ and O₂DN₂ and CO Like 31 Discuss 1Share1
GasesCharles's Law1167Choose the best answerA gas is enclosed under a movable piston. If its temperature is increased from 20°C to 100°C while external pressure remains constant, its volume will:ADecreaseBRemain unchangedCIncreaseDBecome zero Like 0 Discuss 0Share
BUMHS MDCAT 2025 Chemistry#Chemical Bonding#Dipole Moment1168Choose the best answerNH₃ has net dipole moment but BF₃ has zero net dipole moment because of? (BUMHS MDCAT 2025)AB is less E.N than NBF is more E.N than NCBF₃ is pyramidalDNH₃ is pyramidal Like 0 Discuss 0Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Empirical and Molecular Formula#Stoichiometry1169Choose the best answerOxidation numbers of X, Y, and Z are +6, −2, and −1 respectively. The possible molecular formula when these atoms combine is:AX₂YZBXY₂Z₂CXYZ₂DXY₂Z Like 0 Discuss 0Share
StoichiometryGas Density at STP1170Choose the best answerWhat is the mass of 1 dm³ CO₂ at STP (273 K and 1 atm)?A2.4 gB4.2 gC6.45 gD1.96 g Like 0 Discuss 0Share